Blood Pressure Tracking via PPG Signal Morphology Feedback
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing blood pressure tracking and detection systems face challenges such as low measurement accuracy, frequent calibration needs, and complex operations, particularly in long-term monitoring and nighttime tracking, without the ability to automatically adjust and track blood pressure.
Innovation Solution
A blood pressure tracking and detection system comprising a pressure application and release module, a signal obtaining module, and a blood pressure tracking module that uses photoplethysmography (PPG) signals and pressure signals to determine initial blood pressure and update pressure based on morphological features, enabling stable long-term tracking without frequent calibration and user interaction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional blood pressure tracking systems are used, then blood pressure can be detected, but measurement accuracy is low and frequent calibration is required
Solution Approach 1:
The system continuously monitors PPG signal morphological features and uses this feedback to automatically adjust and track blood pressure in real-time, eliminating the need for manual calibration and maintaining high measurement accuracy over long periods
Solution Approach 2:
The system performs self-calibration by automatically detecting morphological changes in PPG signals and adjusting pressure accordingly, enabling long-term autonomous operation without user intervention or external calibration equipment
2Reliability
If manual blood pressure tracking is implemented, then blood pressure can be monitored, but user interaction is required especially during nighttime tracking
Solution Approach 1:
The system automatically detects PPG signal morphology changes and adjusts pressure without user intervention, enabling unattended nighttime monitoring while maintaining reliable blood pressure tracking
Solution Approach 2:
Continuous real-time feedback from PPG signal analysis enables the system to automatically respond to blood pressure changes, eliminating the need for manual operation while ensuring monitoring reliability
3Extent of automation
If simple pressure application is used, then operation is simple, but the system cannot automatically adjust and track blood pressure
Solution Approach 1:
The system incorporates a closed-loop feedback mechanism where PPG signal morphological features continuously inform pressure adjustment decisions, enabling automatic blood pressure tracking despite increased system complexity
Solution Approach 2:
The system replaces manual mechanical pressure adjustment with an automated control system that uses PPG signal analysis to drive pressure application and release, achieving high automation through integration of sensing and actuation
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system provides accurate and automatic blood pressure tracking and detection, reducing the need for frequent calibration and user involvement, especially during nighttime monitoring, by using a servo system to maintain constant arterial volume and adjust pressure based on PPG signal morphological features.
Implementation Method 1
a pressure application and release module configured to apply a pressure to a detected part of a target user
Implementation Method 2
The signal obtaining module is configured to obtain a photoplethysmography (PPG) signal and a pressure signal of the detected part of the target user
Data Source
AI summary
A blood pressure tracking and detection system. The pressure application and release module is configured to apply a pressure to a detected part of a target user according to a pressure application instruction. The pressure application and release module is further configured to release the pressure on the detected part of the target user according to a pressure release instruction. The signal obtaining module is connected to the pressure application and release module. The signal obtaining module is configured to obtain a photoplethysmography (PPG) signal and a pressure signal of the detected part of the target user. The blood pressure tracking and detection module is connected to the signal obtaining module. The blood pressure tracking and detection module is configured to determine an initial blood pressure of the detected part of the target user according to a PPG signal and a pressure signal in a pressure application and release cycle.